#include<stdio.h> 
int main()
{
	FILE *pf=fopen("f4.dat.txt","r");
	if(pf==NULL)
	{
		perror("fopen");
		return 1;
	 } 
	 int ret;
	while(!feof(pf))
	{
		while(ret==' ')
		{
			fseek(pf,1L,1);
		}
		ret=fgetc(pf);
		putchar(ret);
	}
	return 0;
}
